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Improving the identification of high-z Herschel sources with position priors and optical/NIR and FIR/mm photometric redshifts
- Source :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2010, 518, pp.L15. ⟨10.1051/0004-6361/201014593⟩, Scopus-Elsevier, E-Prints Complutense: Archivo Institucional de la UCM, Universidad Complutense de Madrid, Astronomy and Astrophysics-A&A, 2010, 518, pp.L15. ⟨10.1051/0004-6361/201014593⟩, E-Prints Complutense. Archivo Institucional de la UCM, instname
- Publication Year :
- 2010
- Publisher :
- HAL CCSD, 2010.
-
Abstract
- We present preliminary results about the detection of high redshift (U)LIRGs in the Bullet cluster field by the PACS and SPIRE instruments within the Herschel Lensing Survey (HLS) Program. We describe in detail a photometric procedure designed to recover robust fluxes and deblend faint Herschel sources near the confusion noise. The method is based on the use of the positions of Spitzer/MIPS 24 um sources as priors. Our catalogs are able to reliably (5 sigma) recover galaxies with fluxes above 6 and 10 mJy in the PACS 100 and 160 um channels, respectively, and 12 to 18 mJy in the SPIRE bands. We also obtain spectral energy distributions covering the optical through the far-infrared/millimeter spectral ranges of all the Herschel detected sources, and analyze them to obtain independent estimations of the photometric redshift based on either stellar population or dust emission models. We exemplify the potential of the combined use of Spitzer position priors plus independent optical and IR photometric redshifts to robustly assign optical/NIR counterparts to the sources detected by Herschel and other (sub-)mm instruments.<br />Accepted for publication in Astronomy and Astrophysics (Herschel special issue)
- Subjects :
- Astrofísica
submillimeter: galaxies
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Stellar population
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Noise (electronics)
infrared: galaxies
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
galaxies: high-redshift
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Galaxy Astrophysics
Photometric redshift
Physics
Astrophysics::Instrumentation and Methods for Astrophysics
Spectral density
gravitational lensing: strong
Astronomy and Astrophysics
Galaxy
Redshift
Astronomía
Spire
galaxies: photometry
Space and Planetary Science
Millimeter
Astrophysics::Earth and Planetary Astrophysics
galaxies: evolution
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00046361
- Database :
- OpenAIRE
- Journal :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2010, 518, pp.L15. ⟨10.1051/0004-6361/201014593⟩, Scopus-Elsevier, E-Prints Complutense: Archivo Institucional de la UCM, Universidad Complutense de Madrid, Astronomy and Astrophysics-A&A, 2010, 518, pp.L15. ⟨10.1051/0004-6361/201014593⟩, E-Prints Complutense. Archivo Institucional de la UCM, instname
- Accession number :
- edsair.doi.dedup.....d3eaa7b80b5aba51c3e1e73296899c76
- Full Text :
- https://doi.org/10.1051/0004-6361/201014593⟩